Patents by Inventor Michiel Lötter

Michiel Lötter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8423077
    Abstract: A multi-mode wireless communication device and multi-mode communication method are disclosed. The multi-mode device includes a first baseband co-processor configured to execute low-level stack operations of a first wireless communications protocol employed within a first wireless communications network. The device also includes a host baseband processor configured to execute a set of protocol stack operations of a second wireless communications protocol employed within a first wireless communications network and higher-level stack operations of the first wireless communications protocol. A data communication channel capable of carrying data received by the multi-mode wireless communication device from the first wireless communications network or sent by the multi-mode wireless communication device through the first wireless communications network is provided between at least the host baseband processor and the first baseband co-processor.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: April 16, 2013
    Assignee: Broadcom Corporation
    Inventors: Frederic Hayem, Leo Borromeo, Michiel Lötter
  • Publication number: 20120052906
    Abstract: A multi-mode communication device is disclosed and includes a host baseband processor configured to operate in a first communications system of a plurality of communications systems, and a baseband co-processor configured to operate in a second communications system of the plurality of communications systems. The second communications system is different from the first communications system. The host baseband processor is operable to time synchronize the second communications system to the first communications system based on timing information generated by the baseband co-processor. The host baseband processor may include circuitry for issuing, from the host baseband processor, a timer capture interrupt to the baseband co-processor during a predetermined timer phase of the first communications system.
    Type: Application
    Filed: August 23, 2011
    Publication date: March 1, 2012
    Inventors: Frederic Hayem, Leo Borromeo, Michiel Lötter
  • Patent number: 8005503
    Abstract: A method for effecting timing synchronization within a multi-mode communication device is disclosed herein. The method includes configuring a host baseband processor of the multi-mode device to operate in accordance with a first wireless communications protocol of a first wireless communications system. A baseband co-processor of the device is also configured to operate in accordance with a second wireless communications protocol of a second wireless communications system. The method includes establishing, within the device, timing synchronization between the first and second communication systems on the basis of timing information transferred to the host baseband processor from the baseband co-processor.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: August 23, 2011
    Inventors: Frederic Hayem, Leo Borromeo, Michiel Lötter
  • Patent number: 7548580
    Abstract: A system and method for interference reduction in a spread spectrum receiver including a rake receiver having a plurality of fingers for processing a plurality of data signals and an associated plurality of pilot signals is disclosed herein. The method includes generating a plurality of intra-finger interference cancellation signals using the plurality of pilot signals. In this regard each of the plurality of intra-finger interference cancellation signals are associated with one of the plurality of fingers. Ones of the plurality of intra-finger interference cancellation signals are weighted so as to generate a set of weighted intra-finger interference cancellation signals. The method further includes synthesizing at least one inter-finger interference cancellation signal in accordance with the set of weighted intra-finger cancellation signals. At least one inter-finger cancellation signal may then be subtracted from a corresponding one of a plurality of data signals.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: June 16, 2009
    Assignee: Broadcom Corporation
    Inventors: Michiel Lötter, Danie van Wyk
  • Patent number: 7103094
    Abstract: A system and method for interference reduction in a spread spectrum receiver including a rake receiver having a plurality of fingers for processing a plurality of data signals and an associated plurality of pilot signals is disclosed herein. The method includes generating a plurality of intra-finger interference cancellation signals using the plurality of pilot signals. In this regard each of the plurality of intra-finger interference cancellation signals are associated with one of the plurality of fingers. Ones of the plurality of intra-finger interference cancellation signals are weighted so as to generate a set of weighted intra-finger interference cancellation signals. The method further includes synthesizing at least one inter-finger interference cancellation signal in accordance with the set of weighted intra-finger cancellation signals. At least one inter-finger interference cancellation signal may then be subtracted from a corresponding one of the plurality of data signals.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: September 5, 2006
    Assignee: Broadcom Corporation
    Inventors: Michiel Lötter, Danie van Wyk